4-64 4203780 First Edition
ELECTRICAL
4
Symptom: Right mow solenoid does not energize.
Symptom: Left mow solenoid does not energize.
Probable Cause Remedy
Faulty right wing proximity switch. With the right wing in the lowered position, check the proximity switch LED indicator. If the
LED does not turn on, substitute the proximity switch with a known good switch.
Faulty right wing relay. Test right wing relay. (See “Relays Test” on page 4-74.)
Faulty wing mow enable switch. Test wing mow enable switch. (See “Wing Mow Enable and Light Switches Test” on
page 4-79.)
Faulty right mow solenoid. Test right mow solenoid. (See “Solenoids Test” on page 4-83.)
Faulty wire harness. Measure continuity between the PTO switch and the right wing proximity switch.
Continuity must be indicated.
Measure continuity between the PTO switch and right wing relay terminal 30. Continuity
must be indicated.
Measure continuity between the right wing proximity switch and right wing relay terminal
86. Continuity must be indicated.
Measure continuity between ground and right wing relay terminal 85. Continuity must be
indicated.
Measure continuity between right wing relay terminal 87 and the wing mow enable switch.
Continuity must be indicated.
Measure continuity between the wing mow enable switch and the right mow solenoid.
Continuity must be indicated.
Measure continuity between ground and the right mow solenoid ground terminal.
Continuity must be indicated.
Probable Cause Remedy
Faulty left wing proximity switch. With the left wing in the lowered position, check the proximity switch LED indicator. If the
LED does not turn on, substitute the proximity switch with a known good switch.
Faulty left wing relay. Test left wing relay. (See “Relays Test” on page 4-74.)
Faulty wing mow enable switch. Test wing mow enable switch. (See “Wing Mow Enable and Light Switches Test” on
page 4-79.)
Faulty left mow solenoid. Test left mow solenoid. (See “Solenoids Test” on page 4-83.)
Faulty wire harness. Measure continuity between the PTO switch and the left wing proximity switch. Continuity
must be indicated.
Measure continuity between the PTO switch and left wing relay terminal 30. Continuity
must be indicated.
Measure continuity between the left wing proximity switch and left wing relay terminal 86.
Continuity must be indicated.
Measure continuity between ground and left wing relay terminal 85. Continuity must be
indicated.
Measure continuity between left wing relay terminal 87 and the wing mow enable switch.
Continuity must be indicated.
Measure continuity between the wing mow enable switch and the left mow solenoid.
Continuity must be indicated.
Measure continuity between ground and the left mow solenoid ground terminal.
Continuity must be indicated.
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